Reactor for gas phase catalytic oxidation and a process for producing acrylic acid using it
    41.
    发明授权
    Reactor for gas phase catalytic oxidation and a process for producing acrylic acid using it 失效
    用于气相催化氧化的反应器和使用它的丙烯酸生产方法

    公开(公告)号:US07897813B2

    公开(公告)日:2011-03-01

    申请号:US11826630

    申请日:2007-07-17

    IPC分类号: C07C51/16

    摘要: Conventional gas-phase catalytic oxidation reaction apparatus comprising two reactors for production of acrylic acid is subject to problems of high equipment costs for the reactors and piping, necessity for wide installation area and easy accumulation of carbides generated by autoxidation of acrolein. On the other hand, conventional reaction apparatus comprising a single reactor has the drawbacks that the composition of gas in the first stage reaction and in the second stage reaction cannot be optimized independently of each other, and that the allowable concentration of starting propylene is limited because of the risk of explosion. As a reaction apparatus to solve these problems, this invention provides a fixed bed shell-and-tube reaction apparatus comprising a single reactor, characterized in that the inside of the reactor is divided into two reaction zones of the first reaction zone and the second reaction zone, and that a space equipped with a mechanism for introducing a gaseous substance from outside is provided between the two reaction zones.

    摘要翻译: 包括用于生产丙烯酸的两个反应器的常规气相催化氧化反应装置受到反应器和管道的高设备成本的问题的影响,需要宽的安装面积和易于积聚由丙烯醛自动氧化产生的碳化物。 另一方面,包括单个反应器的常规反应装置的缺点是第一阶段反应和第二阶段反应中的气体组成不能彼此独立地优化,并且起始丙烯的允许浓度受到限制,因为 的爆炸风险。 作为解决这些问题的反应装置,本发明提供一种包括单个反应器的固定床管壳反应装置,其特征在于,将反应器内部分成第一反应区和第二反应的两个反应区 并且在两个反应区之间设置有配备有用于从外部引入气态物质的机构的空间。

    PROCESS FOR PRODUCING ACROLEIN AND/OR ACRYLIC ACID
    43.
    发明申请
    PROCESS FOR PRODUCING ACROLEIN AND/OR ACRYLIC ACID 有权
    生产丙烯酸和/或丙烯酸的方法

    公开(公告)号:US20110015432A1

    公开(公告)日:2011-01-20

    申请号:US12934367

    申请日:2009-03-11

    IPC分类号: C07C53/12 C07C27/12

    摘要: In industrial scale production of acrolen and/or acrylic acid by catalytic gas-phase oxidation of propylene or a propylene-containing gas with molecular oxygen or a molecular oxygen-containing gas or in industrial scale production of acrylic acid by catalytic gas-phase oxidation of acrolein or an acrolein-containing gas with molecular oxygen or a molecular oxygen-containing gas, this invention provides a process characterized in that the initial stage operation is carried out under advancedly elevated reaction temperature and thereafter the reaction temperature is lowered to carry out the steady state operation. According to this process, acrolein and/or acrylic acid can be produced in high yield stably over prolonged period.

    摘要翻译: 通过丙烯或含丙烯的气体与分子氧或含分子氧气体的催化气相氧化或工业规模生产丙烯酸和/或丙烯酸,通过催化气相氧化生产丙烯酸 丙烯醛或含有分子氧或含分子氧气体的含丙烯醛的气体,本发明提供一种方法,其特征在于,在高级反应温度下进行初始阶段操作,然后降低反应温度以进行稳定 状态操作。 根据该方法,丙烯醛和/或丙烯酸可以长时间稳定地高产率地制备。

    PROCESS FOR PRODUCING ACRYLIC ACID BY TWO-STAGE CATALYTIC VAPOR-PHASE OXIDATION
    44.
    发明申请
    PROCESS FOR PRODUCING ACRYLIC ACID BY TWO-STAGE CATALYTIC VAPOR-PHASE OXIDATION 审中-公开
    通过两级催化蒸汽相氧化生产丙烯酸的方法

    公开(公告)号:US20100130777A1

    公开(公告)日:2010-05-27

    申请号:US12452876

    申请日:2008-07-18

    IPC分类号: C07C51/16

    摘要: As an improvement in the production method of acrylic acid by two-stage catalytic vapor-phase oxidation of propylene comprising catalytic vapor-phase oxidation of a propylene-containing gas at a first reactor to produce an acrolein-containing gas, and successive catalytic vapor-phase oxidation of the obtained product gas to produce acrylic acid, a process which enables acrylic acid production on an industrial scale for a long period, with stability at high yield is offered. This process is characterized in that a filler formed of a solid inert material is disposed at a cooling part which is provided on the downstream side to the direction of gas flow through the catalyst layer in the first reactor and/or on the gas outlet side of the first reactor, in such a way that the voidage in the filler becomes 45-99%.

    摘要翻译: 作为丙烯酸的制备方法的改进,通过丙烯的两阶段催化气相氧化,包括在第一反应器中对含丙烯气体进行催化气相氧化以产生含丙烯醛的气体,以及连续的催化蒸气 - 获得的产物气体进行相氧化以产生丙烯酸,提供使工业规模长期生产丙烯酸,以高产率稳定的方法。 该方法的特征在于,将固体惰性材料形成的填料设置在冷却部分,该冷却部分设置在下游侧的气体流过第一反应器中的催化剂层和/或第一反应器的气体出口侧的气体流动方向 第一反应器,使填料中的空隙率达到45-99%。

    Catalyst for production of acrylic acid and process for production of acrylic acid using this catalyst
    45.
    发明申请
    Catalyst for production of acrylic acid and process for production of acrylic acid using this catalyst 审中-公开
    用于生产丙烯酸的催化剂和使用该催化剂生产丙烯酸的方法

    公开(公告)号:US20090005593A1

    公开(公告)日:2009-01-01

    申请号:US12080503

    申请日:2008-04-02

    摘要: An object of the present invention is to provide: a catalyst for production of acrylic acid which catalyst is so high active as to give a still higher selectivity of acrylic acid (which is the objective product) or a long-catalytic-life-time catalyst for production of acrylic acid which catalyst is so high active as to be able to give a high acrylic acid yield while suppressing the temperature rise of the oxidation reaction to a low one; and processes for production of acrylic acid using these catalysts. As a means of achieving this object, a catalyst according to the present invention for production of acrylic acid comprises an oxide and/or a composite oxide as an essential catalytic component, wherein the oxide and/or the composite oxide has a metal element composition shown by general formula (1): MoaVbWcCudOx  (1) (wherein: when a=12, then 1≦b≦14, 0≦c≦12, 0≦d≦10, and 0

    摘要翻译: 本发明的目的是提供:用于制备丙烯酸的催化剂,该催化剂具有如此高的活性,以产生更高的丙烯酸(目标产物)的选择性或长催化寿命催化剂 为了生产丙烯酸,该催化剂具有如此高的活性,能够在将氧化反应的温度上升抑制在低温的同时产生高的丙烯酸收率; 以及使用这些催化剂生产丙烯酸的方法。 作为实现该目的的手段,根据本发明的用于生产丙烯酸的催化剂包含氧化物和/或复合氧化物作为必需催化组分,其中氧化物和/或复合氧化物具有所示的金属元素组成 通过通式(1):<?in-line-formula description =“In-line Formulas”end =“lead”?> MoaVbWcCudOx(1)<?in-line-formula description =“In-line Formulas”end = “tail”?>(其中:当a = 12时,则1 <= b <= 14,0 <= c <= 12,0 <= d <= 10和0

    Production process for catalyst
    46.
    发明授权
    Production process for catalyst 有权
    催化剂生产工艺

    公开(公告)号:US07022643B2

    公开(公告)日:2006-04-04

    申请号:US10632030

    申请日:2003-07-31

    IPC分类号: B01J23/00 B01J20/00 B01J21/00

    摘要: There is disclosed a production process for a catalyst which process makes it possible to efficiently carry out the supporting of a catalytic component onto a carrier and to obtain the catalyst excellent in quality and performance. This production process is a production process for the catalyst including a particulate lump carrier and a catalytic component supported thereon; with the production process comprising the step of carrying out simultaneous revolution and rocking of a treatment container 20 as charged with the carrier and a catalyst precursor including the catalytic component, thereby supporting the catalytic component onto the carrier.

    摘要翻译: 公开了一种催化剂的制造方法,该方法使得可以有效地进行载体上的催化组分的负载并获得质量和性能优异的催化剂。 该制造方法是催化剂的制造方法,其包括颗粒团块载体和负载在其上的催化组分; 该制造方法包括对载体和装载有催化剂成分的催化剂前体进行同时旋转和摆动的处理容器20的步骤,从而将催化剂成分负载到载体上。

    Catalytic gas phase oxidation reaction
    48.
    发明申请
    Catalytic gas phase oxidation reaction 有权
    催化气相氧化反应

    公开(公告)号:US20050090695A1

    公开(公告)日:2005-04-28

    申请号:US10958015

    申请日:2004-10-04

    摘要: An object of the present invention is to provide a catalytic gas phase oxidation reaction in which: even under reaction conditions of a higher gas pressure, a higher concentration of the raw material gas and a larger space velocity of a reaction gas, the thermal accumulation at the hot spot portion can be sufficiently suppressed with ease and at low costs, so that the reaction can be continued for a long time while a high yield is maintained. As a means of achieving this object, a catalytic gas phase oxidation reaction according to the present invention is a catalytic gas phase oxidation reaction with molecular oxygen or a molecular-oxygen-containing gas by using a fixed-bed multitubular reactor packed with catalysts; with the catalytic gas phase oxidation reaction being characterized in that: a catalyst-packed layer of each reaction tube of the reactor is divided into at least two reaction zones in a tubular axial direction; and the packing of the catalysts is such that the occupation volumes of the catalysts differ between at least two of the reaction zones and that an inert substance molding is mixed in at least one of the reaction zones.

    摘要翻译: 本发明的目的是提供一种催化气相氧化反应,其中即使在较高气体压力,较高浓度的原料气体和较大的反应气体的空间速度的反应条件下,热累积在 可以容易地且低成本地充分地抑制热点部分,使得反应可以长时间持续,同时保持高产率。 作为实现该目的的手段,本发明的催化气相氧化反应是使用填充有催化剂的固定床多管反应器进行与分子氧或含分子氧气体的催化气相氧化反应, 催化气相氧化反应的特征在于:将反应器的每个反应管的催化剂填充层分成至少两个沿管轴方向的反应区; 并且催化剂的填充使得催化剂的占有体积在至少两个反应区之间不同,并且惰性物质模制品在至少一个反应区中混合。